Federal officials released the results of an assessment of the impact of the Dragon Bravo Fire on the soil of the Grand Canyon's North Rim and the potential aftereffects.

The map assembled by the Burned Area Emergency Response team (BAER) and U.S. Forest Service shows 97,724 acres — about 67% — of the more than 145,000 acres sustained low burn severity.

U.S. Department of the Interior and Kaibab National Forest

About 2% of the soil qualifies as "severely burned" with 26% considered "moderate."

The map is based off field-level burn severity measurements and remote sensing imagery data.

Moderate and high burn levels alter the properties of the soil, which can have negative effects on soil productivity and increase the risk of erosion and runoff hazards.

The results help identify impact

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